Answer:
Step-by-step explanation:
Given that the time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.
P(completing exam before 1 hour)
= P(less than an hour) = P(X<60)
=P(Z<
)
=0.5-0.34=0.16
i.e. 16% of students completed the standardized exam.
Answer:
7
Step-by-step explanation:
Answer:
7.5 pencils broken in a week (5 days).
Step-by-step explanation:
1.5 pencils broken a day
Now we just multiple this by 5 for each of the school day's.
1.5 pencils * 5 days = 7.5 pencils broken in a week.
Have a nice day! :)
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